Question 15 of 20 -/3 View Policies Current Attempt in Progress What influences the Sample Size! We examine the effect of different inputs on determining the sample size needed to obtain a specific margin of error when finding a confidence interval for a proportion Find the sample size needed to give, with 90% confidence, a margin of error within 6 when estimating a proportion. First, find the sample size needed if we have no prior knowledge about the population proportion p. Then find the sample site needed if we have reason to believe that pe 0.6. Finally, find the sample size needed if we assume p09. Round your answers up to the nearest Integer. 2021 Population proportion Sample Size No knowledge: 0.6: 0.9: 1